With my AL1916W, i had issues getting my native resolution set correctly, but now i have another issue. Every time X starts, everything on the screen is kinda blurry. when i start the NVIDIA X Server Settings, it becomes crisp and clear. when i enable Force Full GPU Scaling, the screen becomes blurry again. how do i go about fixing this?

I have a dual screen configuration with a normal flat panel plugged on the first DVI out of my GeForce 8800 GTS and an DVI to SDI adaptator plugged on the second output.
The converter need a 720x576 50Hz output resolution. I configured my xorg to do so.
But when the Full GPU Scalling is enabled, then I didn't get any image trough the interface.
So, I need to start nvidia-settings and then unchecked the corresponding box (Full GPU scalling) sothat the image come back.